Super telephoto zoom lens series walimex pro lens mount four thirds 43 lens speed 8 focal length 650 1 300 mm zoom factor 2 times suitable for sensor type four thirds 43 construction zoom lens area of use animal photography focus manual focus internal focus af motor no internal af motor closest focusing distance 500 cm lens construction groupselements 58 minimum aperture 16 max aperture 8 filter thread 95 mm length 463 mm lens diame